Process for the burning of brick.



G. D. HERROLD.

PROGESS FOR THE BURNING 0F BRICK.

APPLICATION FILED OUT.13,1913.

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G. D. HEEEOLD.

PROGESS FOR THE BURNING 01-" BRICK.

APPLICATION TILED 00T.13, 1913.

Patented June 2, 19%. I

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N ill 1 GEORGE D. I-IERROLD, OF FRESNO, CALIFORNIA.

PROCESS FOR THE BURNING OF BRICK.

Specification of Letters Patent.

Patented June 2, 1914..

Application filed- October 13, 1913. Serial No. 794,985.

To all whom it may concern Be it known that I, GEORGE D. I'IERROLD, a citizen of the United States ofAmerica, and a resident ofthe city of Fresno, county of Fresno, and State of California, have invented a new and useful Process for the Burning of Brick, of which the following is a specification.

\ My invention relates to burning brick with a vitric or glazed surface in a short period of time and in reburning soft or salmon colored brick so that the faces thereon will have a glazed or vitric surface without the use of any substance except such as may be naturally in the material out of which the bricks are made. -The different colors of suck bricks are formed from the character of the soil or shale of which they are made. 'Ihus adobe brick having considerable iron therein will take a black or dark brown hue, while other forms of soil and shale will give other hues;

In the drawings which accompany this specification, I igure 1 shows the kiln and the method of arranging the bricks and drafts. Fig. 2 shows the outside of the kiln with peep holes and adjustable oil burner arranged to spread a flame through openings in the wall on the kiln. Fig. 3 shows the burner in several positions of which it is capable of adjustment. construction of lines so spaced that the flame will strike four faces of the brick.

In the brick kiln A and A are the outside walls of such kiln and B is an arched roof connecting them. 0 and 0' are a plurality of peep holes through which the inside of the kiln can be viewed. d' and d are openings in thewalls of the kiln through which the heat is forced into the kiln. Such openings are directly under peep holes 0 and c. f and f" are nozzles through which fuel oil and steam are blown into the kiln, which are swiveled and are regulated by a lever it so the flame from the burning oil can be spread or wiped in different directions.

In my construction I place the bricks in rows as shown in Fig. 1 having a plurality of rows 1, 3, 5, 7 and 9 such rows having fines or alley ways 2, 4, 6, 8 and 10. These lines are in line with peep holes 0 and c and are so arranged that an operator can at any time view the surfaces of the brick along such alley. The openings d and d are directly under peep holes 0 and c and have Fig. 4 shows the projecting therein a nozzle f which is ad justable vertically, and which is adapted to spray oil and steam into such alleyways, 2, 4, 6, 8 and 10. The process consists in first heating the bricks thoroughly in the ordinary manner of heating kilns with an oil spray and then wiping the faces of the bricks exposed in each alleyway with the lighted spray from the nozzle f or fthrough the opening (Z or d. By means of the peep holes the operator can at any time ascertain the condition of the burning of the brick along the alleyway on a line with such eep hole and raise or lower the flame so t e entire outside surface of such tiers of brick can be uniformly glazed, and by wiping the faces of the brick with the flame they can be heated suiliciently to give the exposed surface of the brick the color and texture of a clinker without warping or otherwise changing its original form. The tiers of brick are piled so the sides and the ends it is desired to glaze are exposed to the flame as described and it will readily be seen that the bricks can be piled in single rows with either the two ends 'or two sides exposed, or in double rows with but one end or one side exposed or openings can be left transversely with the alleys so an end and a side of the brick can be wiped with the flame. Green brick burned in this manner can be burnt and glazed within 4.8 hours and the soft or salmon brick can be glazed or made vitric in 24: hours.

I am aware that the burning of brick is old and that irregular glazed surfaces have heretofore been formed on brick by superheating the surface of brick exposed to the flame.

Vhat I claim as my invention and upon what I desire Letters atent is:

1. The process of glazing brick which consists of subjecting the brick to a confined heat, subjecting the face of the brick to a flame, and maintaining a relative motion be tween the flame and the brick.

2. The process of glazing brick which consists of subjecting the brick to a confined heat, subjecting the face of the brick to an oil flame and maintaining the flame in motion across the face of the brick.

3. The process of vi-trifying the faces of brick which consists of arranging the brick in rows, and wiping the exposed faces of the brick with a confined movable flame.

4. The process of glazing. brick consisting of burning the brick and subjecting the exposed face of the brick to a flame maintained 1n motion across the brick.

5. The process of treating brick consisting of arranging the brick in rows, subjecting the brick to a burning heatconfined by. 

